CVE-2016-1407: Cisco IOS XR through 5.3.2 mishandles Local Packet Transport Services (LPTS) flow-base entries, which allow...

Security readout for executives and security teams

CVE-2016-1407 is a denial-of-service issue in Cisco IOS XR through 5.3.2. An attacker making many connection attempts to open TCP ports could cause sessions to drop. For executives, the main risk is disruption to routers or network services, not data theft. Exposure is most relevant for organizations running Cisco IOS XR through 5.3.2, especially devices with open TCP services reachable from untrusted networks. The bundle does not identify specific models or configurations beyond IOS XR version scope. Treat this as a network availability risk. Prioritize affected edge, provider, or critical routing infrastructure, but avoid emergency assumptions unless Cisco guidance or internal telemetry indicates active impact. Mitigation focus: Review the Cisco advisory for fixed software, workarounds, and affected-platform details.; Inventory Cisco IOS XR devices and identify versions through 5.3.2.; Prioritize remediation for internet-facing or untrusted-network-reachable devices..

Prepared

Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.